Radiant Floor Heating Over Unconditioned Garage
When it comes to best practices, right when I think I’ve got a strong general sense of the correct way of doing something, I go ahead and read a conflicting approach.
I’m looking to add radiant floor heating to the underside of sheathing where the bottom floor is an unconditioned parking garage. Uponor recommends that I go direct to the aluminum heat transfer plates with the insulation, while Joe Lstiburek says this: https://www.buildingscience.com/documents/insights/bsi-064-bobby-darin-thermal-performance#R3
I suppose what I’m looking to better understand is what assemblies call for including an air gap.
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